When reward was introduced into the maze the non-rewarded rats showed a large decrease in time and error scores. When the food reward was removed from the maze the error scores and time scores of the rewarded rats showed a large increase. Two groups of rats, one which ran the maze with reward, and one which ran the maze without reward, were tested to determine the influence upon the learning curve of a sudden removal, or a sudden introduction, of a food reward. (PsycINFO Database Record (c) 2012 APA, all rights reserved) Latent learning of the maze which they were able to utilize as soon as reward was introduced." "(5) It was demonstrated by the use of the two-path maze that the latent learning which was developed under non-reward conditions and was made manifest as soon as reward was introduced was not the result of any very consistently greater frequency of the correct over the incorrect path during the non-reward period." Bibliography and discussions. The results show that: "(1) Rats run under a non-reward condition learned much more slowly than rats run under a reward condition." "(2) Rats previously run under a non-reward condition, when suddenly rewarded made a great improvement." "(3) During the non-reward period, the rats were developing a "They prevented retracings from one section of the maze to another, they were noiseless, and they caused no excitement in the animals." There were 36 rats in each group. The answer to the question as to the efficiency of non-reward units of practice was sought in a comparison of the learning curve of the experimental group (both before and after the introduction of reward) with that of the control group." Three mazes were used, two with ordinary blinds and one with blinds arranged so that the animal could go two ways as well as having as alternatives a long and a short path.
The method devised was that of running two groups of rats through the maze: anĮxperimental group which received no reward during the first part of learning, but which suddenly had reward introduced in the latter part of learning, and aĬontrol group which received reward throughout the whole of learning. "The purpose of this investigation was to study the efficiency of units of practice when unaccompanied by reward.
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